Rex thought this cañon was the most potent symbol of a potent land that could be imagined. It impressed him vividly with the awesome magnitude, the salient ruggedness, the terrible power of the country of which it was an emblem.

His dog-train swayed with shrieking runners among the massed ice-pillars and emerged from the gorge into a wider valley where the hills rose naturally bright in the sunshine with the welcome blue sky resting upon their peaks.

Britton could see that the Klondike River was the main recipient of the long trains of ice which slid with snail-like motion from the crests of the glaciers. Frozen gullies full of these moving, mile-long torrents broke in upon the larger river and piled the junction points full of massive, chaotic ice-bridges which were painfully difficult to cross.

Lessari stumbled upon one huge jam and went down among the sharp, crystal fragments. He gasped when he regained his feet, and the dry, hacking cough became more convulsive. Seeing that he was nearly spent, Rex beckoned for a few minutes' halt, though having hopes of reaching mountainous shelter before nightfall, he did not wish to delay very long.

While they rested on a high ice-bridge quite a distance above the Klondike Cañon, they heard a thin, hissing wail far back in its depths.

"Sled!" exclaimed the listening Corsican, breaking into speech without thinking of the consequence.

At his effort the icy casing which covered his cheeks snapped in showering splinters, gashing the skin in a dozen places. He groaned in pain while the blood trickled down his face.

Britton thawed his mouth free by the warm pressure of his fur gauntlets.

"You're right, Lessari," he said. "It sounds like a dog-train coming through the cañon. Surely that cursed Indian hasn't been spreading the news! Or perhaps someone has trailed us from Samson because they think we know of a find up this way."

Britton's tone was angry as well as disappointed. He had not undertaken the dangerous and arduous trip up the Klondike for the purpose of showing the way to some trailers who might contest the ground with him. If any rough characters were following because they suspected he had knowledge of a gold deposit, Rex knew he would have to fight for what he found, and fight, no doubt, with the odds against him.